Thickness dependence of magnetic domain formation in La0.6Sr0.4MnO3 epitaxial thin films studied by XMCD-PEEM

被引：12
|
作者：
Taniuchi, Toshiyuki
Yasuhara, Ryutaro
Kumigashira, Hiroshi [1 ]
Kubota, Masato
Okazaki, Hiroyuki
Wakita, Takanori
Yokoya, Takanori
Ono, Kanta
Oshima, Masaharu
Lippmaa, Mikk
Kawasaki, Masashi
Koinuma, Hideomi
机构：
[1] Univ Tokyo, Dept Appl Chem, Bunkyo Ku, Tokyo 1138656, Japan
[2] JST, CREST, Kawaguchi, Saitama 3320012, Japan
[3] KEK, Inst Mat Struct Sci, Tsukuba, Ibaraki 3050801, Japan
[4] Okayama Univ, Fac Sci, Surface Sci Res Lab, Okayama 7008530, Japan
[5] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
[6] Tohoku Univ, Mat Res Inst, Sendai, Miyagi 9808577, Japan
[7] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan
来源：
SURFACE SCIENCE | 2007年 / 601卷 / 20期
基金：
日本学术振兴会;
关键词：
PEEM; XMCD; spintronics; magnetic domain; manganite; thin film;
D O I：
10.1016/j.susc.2007.05.036
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We have used photoelectron emission microscopy (PEEM) and X-ray magnetic circular dichroism (XMCD) to study the effect of thin film thickness on the magnetic domain formation in La0.6Sr0.4MnO3 samples that were epitaxially grown on stepped SrTiO3 (00 1) substrates. The magnetic image exhibited a stripe structure elongated along the step direction, irrespective of film thickness, suggesting that uniaxial magnetic anisotropy induced by step-and-terrace structures plays an important role in the magnetic domain formation. Additional domains evolved gradually with increasing film thickness. In these domains, the direction of magnetization differed from the step direction due to biaxial magneto-crystalline anisotropy. The evolution of additional magnetic domains with increasing film thickness implies that a competition exists between the two anisotropies in LSMO films. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：4690 / 4693
页数：4
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